About a woman who committed a crime so foul, she's doomed to run a hotel full of ghosts until she finds someone guilty of a worse crime. Problem is, she can't remember what she did. She's now been there over a thousand years. Or something. Looks interesting, though.
Still haven't watched it yet, as -- lazy boy that I am -- discovered an earlier one of hers on youtube, and got into a binge. No fantasy/horror elements at all, though; this one's a family melodrama, with enough convoluted plot lines to satisfy Dickens.
IU's storyline is Ugly Duckling, which, judging from the comments (and my own impression) is the biggest misstep in the series. Her character's supposed to be plain and unattractive. Yeah, right.